54 Cool 3D Prints: Fun And Useful Things To 3D Print

Been working on ancient city models lately and finally finished Rome.
Trying to find the right balance between detail and printability was probably the hardest part.
Curious what you guys think. Anything you'd change?

Got sick and tired of coworkers stealing my ketchup so I designed a lock to keep them out.

This was actually for last Halloween but I put it back up this year. Someone was saying Reddit might be interested in it. Feel free to ask any questions.
Wife also suggested I try to get some sort of Guinness book of world record on this. I don’t know how one would do that so if anyone had any ideas let me know.

This project has been a work in progress for the better part of 9 months, I've been slowly printing each state as I have the time. Finally added Alaska today to complete the map.
Because each one is (on average) less than 10mm thick, this whole project actually didn't use that much filament (my best estimate is 3-4kg).
The scale of Hawaii is a little larger than it should be; the iteration of files I was using had the scaling a little off and I didn't notice until it was finished printing. Haven't decided if it's worth re-printing yet.

Made a dice tower & box for a friend and wow I'm just blown away by this filament. it's amazing how with just a little bit of work how much this passes for real wood. Model by Platcham

Finally finished printing the last few custom parts for my hobby desk storage walls. The base pieces are the Multiboard project. Really loved the way the paint racks turned out. I think dedicated bottle holder racks that are more popular in style would have been far less versatile. I'm also really happy with the gridfinity shelf that holds my small tools that get used frequently. Much more convenient to pull the small organizer off the wall, into the desk, and use the tools right there. I was worried about the weight of the large bottles of various paint liquids on top of the drawers, but those are very solid. I think the only part I'm not in love with is that I didn't have a vision of the whole thing when I started, so it's printed in a mishmash of various blues instead of a unified color theme... Oh well, maybe v2.0

Was annoyed by the unexpected avalanches from the cupboard and designed this lid holder for the Ikea 365+ lids. It can be installed either with sticky tape or with two screws.

Aell we finally made it. An Obama that is perfectly clear
My friend and I printed this on a Elegoo Mars 2 pro

Showcase my 3d print chair
This is a 3D printed chair designed using topology optimization. The manufacturing process used six FDM printers and the chair was polished and painted carefully. I love this work because this is meaningful to my life.

I went from unemployed graduate to now working at a pretty sweet job!
As we all know job markets are pretty rough around the world especially in the UK for new grads.
So I started off offering 3D printing as a service as well as selling on Etsy to support myself.
I also help out occasionally in my local community and a local property manager needed a statue for the front of his building!
I took a 3d scan of an existing statue with my iPhone then re modelled it with nomad and fusion.
I did basic FEA of the cut blocks at the base and adjusted the infill to be a bit stronger towards the base as the total weight sits around 30-40kg of PETG (I cannot remember the exact weight now as this was 3 months ago)
Total print time was a bit over 1200 hours and took over 15 days of straight printing (very little failures or re-prints needed). The entire print was joined together with a mix of industrial glue (I think the name was CT something) plastic welder, filler, 3D pen and of course the mighty solder to help clean up some rough edges. The base half of the statue is screwed to the building as I just used Bambu slicer to add holes in all the blocks.
My total spend on material was £230ish and I was paid £1000. (Yeah I was definitely underpaid but this was my first and maybe my last time doing something this big!)
Safe to say the guy was super impressed and asked if I needed a job as to put it in his words: if you can design and print a statue, you can handle spreadsheets and talking to people.
For anyone concerned about weather or longevity. It’s covered in thick coats of paint and clear coats to finish it off.
To note: the manager did say he was quoted 3 months and £2.5k for plaster which is why he wanted a faster solution and turned to 3d printing.
To anyone really concerned about longevity, property folk don’t really care and just want the job done quick and dirty as it’s not really their concern in 10-20 years time. Hence why I was lowballed at £1k🤣

It was really easy to do with brain2print.org. Just took 23.5h to print..

I wanted to make a mushroom grow kit that was fun to hold. The orange "air ring" holds a swappable hygrometer to measure humidity and temperature. There's 8 air holes that are opened and closed by twisting the outer ring.

A few years ago, u/raceking37 and I decided to create our own digital watch. The project was inspired by a few vintage HDSP-2000 LED matrix displays that we had acquired. These displays were first introduced in the 1970s and have a really unique look, especially under a microscope (as shown in the last image). They're quite difficult to photograph with my phone, though, so they look much nicer in person than they do in these photos. The watch uses an ATTINY1616 microcontroller. The metal case of the watch is SLM 3D-printed in stainless steel.

9 plates, 2kgs filament, 80+ hrs print time. All on A1 Mini. Also about 3 failed plates.